1) I can just step back and LOS them and heal. They don't have this luxury most of the time.
2) I am level 78, most of them in these areas are 72 at best.
3) My PVP gear is season 4. It's not even possible to get better gear than that without at least being level 80 and hitting heroics. 90% of everything I run into I'll clobber uncontested.

Wait till a DK gets the same level gear as you. My 64 DK dueled a drood and I ate him up. Oh let me corrupt your heals for you while my worms heal me. What? What's that, you want to run away? DEATH GRIP YOUR WUSSY ARSS! Get OVER HERE and take your beating.

DKs are so over powered it isn't even funny. I actually felt bad for that drood. I came out with almost full heals and with full runes charged. LOL! and I do mean LOL!